The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 20, 2021
Filed:
Sep. 13, 2018
Shenzhen Goodix Technology Co., Ltd., Guangdong, CN;
Yingsi Liang, Guangdong, CN;
Ya-Nan Wen, Taipei, TW;
SHENZHEN GOODIX TECHNOLOGY CO., LTD., Guangdong, CN;
Abstract
A noise sensing circuit is provided according to the disclosure. The noise sensing circuit includes a first filter, which is coupled to a plurality of receiving electrodes, and configured for receiving a plurality of reception signals corresponding to the plurality of receiving electrodes, and performing a high pass filtering operation or a band pass filtering operation on the plurality of reception signals to generate a filtering result; a down-sampling unit, which is coupled to the first filter, and configured for performing a down-sampling operation on the filtering result to generate a down-sampling result; and a noise detection unit, which is coupled to the down-sampling unit, and configured for determining a first operating frequency of the touch device according to the down-sampling result.